With his notion of absolute consciousness, Sartre tries to rethink the relation between consciousness and the self. What is the origin of subjectivity in relation to a consciousness that is characterized as impersonal and as a radical lucidity? In this article, I attempt to question that origin and the nature as such of the subject in its relation to a consciousness that in its essence is not yet subjective. On the contrary, it is characterized by a selfpresence that is so radical that it threatens every form of self-knowledge.